The Universal Power Adapter

"Informally known as uPower or UPA, the adapter would serve as a single power supply for one or more mobile or fixed devices or power packs. Once hooked up to the uPower adapter, an electronic appliance would use low data-rate communications to "request" the voltage it needs, and the adapter would adjust volts to operate the appliance. According to Palmer, this means there is conceptually no limit to the variety of devices (even hybrid cars) that could be plugged into the UPA.. Palmer says that in the future, he envisions the uPower adapter replacing the typical plastic wall plate, with its limited two-plug capacity for powering electronics."

Phsyorg